Question: May I report 20931 for a structural allograft related to open reduction, internal fixation of a periprosthetic femur fracture two weeks following a total hip replacement? California Subscriber Answer: No. You should not report allografts separately in the situation you describe. You should report +20930 (Allograft for spine surgery only; morselized [list separately in addition to code for primary procedure]) and +20931 (- structural [list separately in addition to code for primary procedure]) only for spine surgery. CPT lists the codes you may report 20930-2031 with, and all of them fall under the "Spine (Vertebral Column)" codes in CPT. For instance: For a structural allograft with posterior arthrodesis (six vertebral segments), you should report 22800 (Arthrodesis, posterior, for spinal deformity, with or without cast; up to 6 vertebral segments) and 20931.